NASA/Bill Ingals

Stargazers hoping for an early evening rocket show tonight will have to wait a bit longer, it seems. The test flight of the Antares—a new class of rocket designed to service the International Space Station—was scrubbed this afternoon after crew members at the launch site on Wallops Island, Va. reported that an umbilical line to the craft’s second stage had come loose.

When it enters service, the Antares, made by Vienna-based Orbital Sciences Corporation, will be the United States’ second privately funded spacecraft to service the International Space Station. (The other is made by SpaceX, and launches from Florida.) The Antares’ launch site is at the Mid-Atlantic Regional Spaceport, a facility for privately funded launches at NASA’s Wallops Flight Facility.

Given today’s overcast conditions on the Eastern Shore of Virginia, the rocket had a less than 50 percent chance of taking off as scheduled. Had it launched, it would have been visible up and down the East Coast, including from D.C. about three minutes into its planned 10-minute flight.